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Final english - Essay Example

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Tying Evolution of Engines to Energy Efficiency and Environmental Friendliness The demand for sustainable environment has fuelled the need to develop highly efficient engines for automobiles. Indeed, engines for modern cars have changed so much that they almost look different from the first inventions in 17th century…
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Final english

More importantly, governments are also providing incentives and tax waives to people who buy hybrid cars in order to encourage the manufacturers in their efforts to manufacture energy efficient automobile engines. Different automobile engines have evolved with time. However, the most common are the 4 cylinder inline engine, v6, v8, and hybrid engines. This paper discusses the different automobile engines whilst comparing their technology, efficiency, environmental friendliness, and the challenges faced while developing engines that are more efficient. Additionally, the paper will discuss the advantages of hybrid cars with much reference to Toyota Prius. 4 Cylinder (V4) Inline Engines Perhaps 4 cylinder inline engines are the most commonly used engines today. However, the technology for this type of engine has revolutionized for decades. Many improvements have been made on the engines to make them efficient, more powerful, and compact and environmental friendly. Technologically, the 4 cylinder inline engine has all the four cylinders arranged in a straight line with all the four pistons being used to drive a common crankshaft. In most cars, the piston displacement goes up to 2.4 liters. However, diesel powered 4 cylinder inline engines have most often gone beyond 3.0 liters displacement. Notably, a series of modifications have been made on this type of engine. Whereas most of earlier versions used carburetor, modern cars use complicated electrical systems such as the VVTi systems (“U.S department of Energy”). Indeed, most modern cars produced in the last ten years have a computerized system otherwise referred to as engine management systems for controlling fuel and air into the engine. Considering the widespread use of4 cylinder inline engines, it is safe to conclude that these are the most efficient automobile engines so far especially considering the widespread use of gasoline and diesel as the propellant (“U.S department of Energy”). V6 Engines V6 engines are indeed the second most commonly used engines in automobiles. The v6 engine comprises of 6 cylinders with 6 pistons driving a common crankshaft. However, the 6 cylinders are not often placed in one straight line. Actually, three cylinders are put on either side making a v shape with the crankshaft. Most of these engines are either configured at 60 degrees or 90 degrees. However, the 60 degree orientation is arguably the most efficient and provides less engine vibration as well. However, it is important to note that most v6 engines are most commonly used in medium sized cars especially most of the lower end sports utility vehicles (SUVs). However, in line with the need for energy conservation, v6 engines have undergone tremendous improvements. For instance, the inline 6cylinder engines are no longer being manufactured. The piston angle has also been factored in many model manufacturing. For instance, some of the modern cars using v6 engines are either turbocharged or use super chargers to improve fuel efficiency and produce more torque. Simply put, turbo chargers are systems that compress and sometimes preheat air and force it into combustion chambers at high pressure hence generating more energy (“U.S department of Energy”). V8 engines V8 engines have eight cylinders with four cylinders on each side. All the eight cylinders drive the same ... Read More
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